Features And Treatment Objectives Of Class II Division 2 Malocclusion

Features And Treatment Objectives Of Class II Division 2 Malocclusion

Write short note on Class 2 Div 2 malocclusion.
Or
Write short note on features of Class 2 Div 2 malocclusion.
Answer. Class 2 division 2 malocclusion results due to dentoalveolar compensation for a class II skeletal pattern by retroclination of the upper central incisors.

Clinical Features

Class 2 division 2 can be studied under the following headings

Skeletal Features

• Skeletal pattrn may be class I or class II.
• Class 2 skeletal pattrn is mild when comparison has been done with division 1 pattrn.
• In vertical dimension, lower anterior facial height is smaller.
• Deep bite can be moderate to severe.
• FMA is lower.
• The maxillary arch may be broad relative to mandibular arch when compared transversely

Soft Tissue Features

• Lower lip is highly relative to the upper incisor crown.
• Lower lip is high so it causes upper incisors to retrocline because the skeletal pattrn is not severe.
• Mentolabial fold is deep
• Lower lip is hyperactive.
• Due to chin prominence, profie may be straight.
• Lips are competent.
• Strong musculature
• Trauma to the palatal gingiva is seen due to closed bite of lower incisor.

Occlusal Features

• Class 2 division 2 incisor relationship
• Class 2 canine relation
• Class 2 molar relationship
• Increased curve of Spee
• Retroclined lower anterior teeth
• Lower anterior crowding
• Excessive deep overbite
• Increased interocclusal clearance or increased freeway space.

Objectives of Treatment

• Establishing class I molar relation
• Alignment of the upper incisor
• Elimination of functional retrusion
• Correction of potentially traumatic deep bite.
• Relieving the crowding in the lower arch.

Treatment of Class II Division 2